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IdeaGauntlet
Put your idea on trial before users do
5 followers
Put your idea on trial before users do
5 followers
IdeaGauntlet is an open-source CLI + MCP server that stress-tests a product idea with adversarial AI agents — a multi-role "court" debate, synthetic user objections, and grounded scoring. It won't cheerlead: it looks for the fastest way your idea dies while it's still cheap to kill. Run it in your terminal (bring your own model) or key-free inside Claude Code / Cursor. MIT-licensed.
Hey 👋
I built IdeaGauntlet because I kept seeing the same problem: people, including myself, often get excited about an idea and start building too early, before really testing whether the idea is clear, painful, differentiated, or worth validating.
Most AI tools help you generate more ideas. I wanted something different: a tool that helps your existing idea survive criticism before you spend weeks building the wrong thing.
IdeaGauntlet is an open-source CLI and library that turns a raw product idea into adversarial critique, court-style multi-role debate, synthetic user objections, MVP validation plans, and side-by-side idea comparisons.
While building it, the process evolved from a simple “critique my idea” command into a more structured validation workflow:
- quick critique for fast sanity checks
- court mode for deeper multi-role debate
- synthetic users for objections and interview prep
- MVP planning with kill criteria
- benchmarking and history tracking so ideas can improve over time
The goal is not to predict whether an idea will succeed. The goal is to expose weak assumptions earlier, sharpen the idea faster, and help founders, indie hackers, and product engineers validate before they build.
I’d love feedback from the community — especially on the workflows, scoring system, and what kind of idea-validation reports would be most useful before starting a project.
The adversarial angle here looks genuinely useful, especially the synthetic users part. One thing that would push it further for me — letting me save and compare multiple gauntlet runs side by side so I can see how an idea evolves after I tweak the concept. Would make iteration way more tangible than starting fresh each time.
@feza_mahir49399 Thanks — really glad the adversarial angle and the synthetic-users part landed. (They're deliberately labeled fictional, so the goal is to hand you sharp objections to take into real interviews, not to skip them.) Good news on save + compare: that's actually already in there. `--save` stores each run, `idea-gauntlet history` lists them, and `--evolve ` diffs a fresh run against a saved one so you can see the score deltas after you tweak the concept. There's also a `compare` mode that puts multiple ideas side by side. That said, your framing is the right push — right now the "evolution" is more numbers than picture. Making it a genuinely visual side-by-side timeline, so iterating feels tangible, is exactly where I want to take it next. Noted as a real thing to sharpen. If you give it a spin, I'd love to know whether `--evolve` gets you most of the way there or still feels like it's missing that side-by-side view.
Maker here 👋 Since launching I shipped v0.3.0 — a big update:
🏛️ Court mode now opens with a steelman (the strongest, fairest version of your idea) before the skeptics attack it — and the judge has to cite which role argued what.
📊 Grounded scoring: every score comes with the evidence behind it + "what would move it ±2", so you can argue with the number instead of trusting it.
🃏 Shareable verdict cards: `--format card`.
🤖 A GitHub Action that critiques the idea in a PR and comments the verdict.
⚡ Zero-install: `npx idea-gauntlet quick "your idea"` — or run it key-free inside Claude Code / Cursor.
Repo: https://github.com/Thuong180702/IdeaGauntlet
Would love feedback — drop an idea and I'll run it through the gauntlet.